Here are the things that I use to create book covers and some of the accessories that I have that help me do my job a little easier.
Apple MacBook Pro
Apple iPad Pro w/Apple Pencil
Apple iPhone (no I don’t design on this, but it does help me stay connected with clients and keep my schedule straight!)
Adobe Creative Cloud
(some of these may be affiliate links)
Matte Screen protector
(Makes it feel like I’m drawing on paper
instead of slick glass!)
High Capacity External battery
(for phone and macbook)
You can also sometimes find links to books and other products I like on my facebook page.
And there are some non book cover design related shopping ideas here